Crassatelloidea

Crassatelloidea is a superfamily of bivalves in the order Carditida. In the World Register of Marine Species (WoRMS), Astartoidea is considered a junior synonym of Crassatelloidea, whereas in ITIS Astartoidea is a separate family containing Astartidae and Cardiniidae – Cardiniidae itself being classified instead in Carditoidea by WoRMS.

List of families
According to ITIS:


 * Crassatellidae

According to the World Register of Marine Species:


 * Astartidae
 * Crassatellidae